Drawbench



Oct. 15, 1963 R. J. MYOTTE 3,107,006

DRAWBENCH Filed Dec. 2'?, 1961 6 Sheets-Sheet l FIG. 2

I ROBERT MYOTTE C- 15, 1963 R. J. MYoTTE 3,107,006

DRAWBENCH Filed Dec. 27, 1961 6 Shee'bS-Sheet 2 FIGB NV EN TOR.

la I8 ROBERT J. MYoTTE Fl G. 5 By ATTORNEYS OC- 15, 1963 R. J. MYOTTE3,107,006

DRAWBENCH Filed Deo. 27, 1961 6 Sheets-Sheet 5 FIG. 6

"mh" sl:

F168 ISM-JL A ORNEYS INVEN TOR. ROBERT J. MYoTTE Oct. 15, 1963 R. J.MYOTTE 3,107,006

DRAWBENCH Filed Deo. 27, 1961 6 sneetsu-sheet 4 FIG. 9

POSITION A PosmoN B FIG. IO

los 82 INVEN TOR. ROBERT J. MYOTTE 0m M fhck WAORNEYS R. J. MYOTTE Oct.l5, 1963 DRAWBENCH PosmoNB Z54 IIB fol t 6 Shee's-Sheet 5 Filed Dec. 27.1961 Posmou A FIG. I3

INVENTOR. ROBERT J. MYOTTE Oct. 15, 1963 R, J, MYOTTE 3,107,006

DRAWBENCH Filed Dec. 27, 1961 e sheets-sheet e FIG. I4

TTORNEYS United States Patent OT 3,107,006 DRAWRENCH Robert 3. P/lyotte,19431 Grmiston Ave., Enciid, Ohio Filed Dee. 27, 1961, Ser. No. 162,44819 Claims. tCi. 2957-3) This invention broadly relates to the drawbenchart, and more particularly to means for intercepting workstock after ithas been released from the drawbench die stand, and carriage,respectively. This application is a continuation-in-part of myco-pending application entitled Drawbench, Serial No. 803,295, led March31, 1959, now Patent No. 3,029,930.

When drawing tubing, wire, or rod which is long in proportion to itsdiameter, energy is accumulated and stored in the workstock. This energyis expended thereafter when the Workstock is released from the die standby causing the workstock to snap forward much -in the nature of anextended rubber band which is iirst released at one end only. 'Iheresult is often times a sudden shock to the workstock by virtue ofcollision with the die stand or cam'age, resulting in kinking orbending, sometimes referred to as doglegging I am familiar with eifortsin the past to solve this problem by use of carriage shock absorbers,deiiecting plates, channels and the like. However, I believe myinvention to be a departure from prior teaching, and that I am the firstto utilize principles of energy dissipation different from thosepresently known and used in the prior art. My invention contemplates theuse of a plurality of energy dissipating V-shaped crotches which willintercept the workstock once it has been released from the die stand.These crotches may be advantageously lined with a material having a highcoeicient of friction relative to the workstock, whereupon forwardmovement of the workstock 4is arrested almost instantly. I consider myconcept of V-shaped energy dissipating crotches to be novel, as well asthe various expedients which I utilize in accomplishing the broadconcept of my invention.

-It is therefore among the objects of my invention to provide novelworkstock energy dissipating mechanisms for use in association withdrawbenches; to provide socalled anti-recoil workstock interceptingmechanisms to receive stock after it has been released from its diestand and carriage, respectively, and which will arrest forward movementof the stock almost instantaneously; to provide an energy dissipatingmechanism for drawbench workstock by means which are simple, yetreliable; to provide means for intercepting and dissipating the energyof workstock released from a drawbench before any doglegging can occurto the leading end of the workstock; and to provide an anti-recoilmechanism which may be used in association with, or which is readilyadaptable for use with most, if not all, presently known designs ofdrawbenches.

The features of this invention which are believed to be novel are setforth with particularity in the appended claims. The invention itself,however, both as to its organization and use, together with furtherobjects and advantages thereof, may best be understood by reference tothe following description taken in conjunction with the accompanyingdrawings in which:

FIGURE 1 is an elevational View, with parts in section, of aconventional drawbench having in association therewith one preferredembodiment of the invention;

IFIGURE 2 is an enlarged cross-sectional view taken on the line 2 2 ofFIGURE 1;

FIGURE 3 is a cross-sectional elevation of a conventional drawbench,such as shown in FIGURE 1, showing another embodiment of the invention;

Patented Got. 1.5, 1963 FIGURE 4 is a fragmentary side elevational Viewtaken on line 4-4 of FIGURE 3.

FIGURE v5 is a cross-sectional elevation of a conventional drawbench,such as shown in FIGURE 1, showing yet another embodiment of theinvention in operative position;

FIGURE 6 is a cross-sectional elevation of the conventional drawbench ofFIGURE 5, showing the embodiment of the invention of FIGURE 5 in theinoperative or workstock discharge position;

yFIGURE 7 is a fragmentary perspective view of the embodiment of theinvention shown in FIGURE 5 in coacting relationship with workstock inthe process of being drawn;

FIGURE 7A is a front elevational View of a modified embodiment of theinvention shown in FIGURES 5, 6 and 7.

FIGURE 8 is a fragmentary elevational view of the embodiment of theinvention shown in FIGURES 5, 6 and 7, illustrating the coactinglrelationship with a drawbench carriage.

FIGURE 9 is a cross-sectional elevational view of a conventionaldrawbench, such as shown in FIGURE 1, showing still yet anotherembodiment of the invention in operative position;

IFIGURE 10 is a fragmentary plan view of still another embodiment of theinvention;

FIGURE 11 is a fragmentary side elevational view of the embodiment ofthe invention shown in FIGURE 10;

FIGURE 12 is a sectional View taken on the line 12 12 of FIGURE 11;

FIGURE 13 is a fragmentary sectional view of FIG- URE 12 showing theanti-recoil device in a discharge position.

FIGURE 14 is a, fragmentary schematic representation of the drawbenchcarriage and limit switches actuated thereby;

FIGURE 15 is a schematic wiring diagram of the electrical circuitryemployed in association with the embodiments Vof the invention shown inFIGURES 1 through 9;

FIGURE 16 is a fragmentary schematic representation of the pneumaticsystem employed in the embodiments of the invention shown in FIGURES 10through 13; and

FIGURE 17 is `a schematic wiring diagram of the electrical circuitryemployed in association with the embodiments of the invention shown inFIGURES 10 through 13.

Reference will now be made to the drawings in greater detail, and at theoutset to FIGURES 1 and 2.

A conventional drawbench 16 includes a structural frame having .uprights12, longitudinal structural members 14, cross members 16, and trackmembers 18 and 19. Pairs of sprockets 20 and 21 are journaled onopposite ends of the drawbench and are transversely spaced apart tocarry a pair of horizontally spaced longitudinally rotating chains 22. Abull gear 24 is mounted on a drive shaft 26, as are transversely spacedsprockets 21,V and a pinion 28 is drivingly connected to bull gear 24and powered by drive means 3i). A die stand 32 is mounted at one end ofthe drawbench 19, and a carriage 34 adjacent thereto is adapted to runon tracks 19 from left to right, as viewed in FIGURE 1, until workstockW is fully drawn through the .die stand. Drive means 3G is then reversedand the carriage is returned to its initial position adjacent die stand32.

As the carriage 34 reaches the end of its traverse to the right ofdrawbench 10, the carriage workstock gripping means releases the leadingends of the workstock by means responsive to release of the trailingends of the workstock from the die stand 32. Means for gripping andreleasing workstock associated with the die stand 32 and carriage I34are well understood by those skilled in the art and do not thereforeconstitute a portion of this invention. However, as aforesaid, thesudden release of tension in drawn workstock oftentimes results inwhiplashing of the stock resulting in spoiled stock and darnagedequipment. To alleviate this condition, anti-recoil means 40 are mountedat intervals beneath the track members 19 to projectupwardly throughopenings 41 in inclined table 42, also positioned beneath track members19.

One preferred embodiment 'of the invention is best shown in FIGURE 2 andcomprises a supporting `arm 5G pivotally mounted on -a lug member 52secured to the underside of an inclined table 42. A plurality of V-crotch stock intercepting members 54 are `fastened to the top side ofsupporting arm 50 and are positioned to be directly beneath workstock Wbeing drawn by the carriage 34 mounted on the tracks 19. A fluid motor56 is pivotally anchored to a base lug S8 secured to structural member14 of frame 10, and the piston rod 60 of the motor is pivotally securedto the underside of supporting arm 50 by means of lug member 62 integralwith the supporting Workstock guide members 64, made of resilient,yieldable material are secured to opposite sides of the open ends of theV-crotch stock intercepting members 54. These guide members y64 projectupwardly through opening 41 of inclined table 42 to straddle respectiveworkstock members W.v So positioned, the guide members are in -the path`of the carriage 34, but being ilexibly resilient are deflecteddownwardly by the traverse of the carriage V34, best shown in FIGURE 8,as `the carriage passes immediately overhead. As soon as released by thedownward pressure of the carriage 34, the guide members 64 spring backto their upright position to again straddle the workstock W, therebycontinuing to serve as `guides into the V-crotch stock interceptingmeans 54.

When the carriage 34 reaches the end of its run, the trailing end of theworkstock Aleaves the die stand 32 and in so doing actuates the jaws ofthe carriage 3'4 to release the leading ends of the workstock W. Becauseof the close proximity of the V-crotch means to the plane of travel ofthe workstock W, each workstock member is securely lodged in itsrespective V-crotch intercepting means before the Iworkstock can moveforward any appreciable amount responsive to the release of energysuddenly expended when the trailing end 'of the stock leaves the diestand.

As best shown in FIGURE 7, the inner surfaces of the V-crotch shapedintercepting members may be lined with substance 66 having a lhighco-efcient of friction Vrelative to the workstock W. These crotches S4assisted by surface substance 66, act to retard forward movement of thestock yalmost immediately, thereby preventing any collision of theleading end of the stock with either the carriage or the die stand. Ingeneral, vulcanized rubber cemented to the V-crotches 54 has been foundvery effective in arresting forward movement of the stock once it isfree from the die stand and the carriage, although the invention is notlimited to any particular lining.

Once vthe workstock is gripped or wedged in the apex ofthe crotches ofthe V-shaped intercepting members 54, uid motor 56 (FIGURE 2) isenergized to retract piston rod 60 within the cylinder portion of themotor to pivot supporting arm 50 downwardly in a transverse andclockwise direction, as shown in phantom in FIGURE 2, whereupon theworkstock Wis transferred to the -top surface of inclined table 42.Thereafter the workstock is free to roll by force of `gravity to oneside of the drawbench.

In -another embodiment of the invention, see FIGURES 3 and 4, theV-crotch intercepting members 54 are supported on an upstanding carrierbracket 68 pivotally secured by -pins 69 to a supporting bracket 70mounted on longitudinal members 14 of the yframe 10. A fluid motor 72pivots the carrier bracket 63 longitudinally with respect to thedrawbench, as opposed to the transverse pivotal 4 movement of the Iarm50 of the embodiment illustrated in FIGURE 2. In conjunction with thissecond embodiment of the invention, longitudinal slots 74 are providedin the table 42 Iso as to enable the V-crotch intercepting members toclear the surface of the table.

Although less clearance space is required in the table 42 to providemovement of the V-crotch members in the embodiment of FIGURE 2, there isan advantage in the arrangement shown in FIGURES 3 and 4 by virtue ofthe fact that certain compensating positioning of the stock is providedfor by longitudinal arcuate movement of the V-crotch members. Otherwisestated, due to the momentum of the forward motion of the stock as itleaves the die, the stock will continue to travel forwardly a distancebefore being intercepted, depending, of course, on the length `of thestock, its initial speed, its mass, and other considerations. 'I'hisforward motion may, in certain circumstances, be sufficient to projectthe forward end of the stock into position which would present problemsof interference in getting the `stock to roll to one side of thedrawbench. With the embodiment shown in FIGURES 3 and 4, arcuatelyshifting the V-crotch members tends to reshift the stock rearwardly soas to clear any potential obstructions which the front of the stock mayencounter.

Another embodiment of the invention contemplates the sequential use of a`combination of the arrangements shown vin FIGURES 2 and 3 whereincertain of the V- crotch members 54 would 1lbe mounted first fortransverse pivotal movement, and other V-crotch members would be mountedthereafter for longitudinal movement, th-us combining the advantages ofboth arrangements.

FIGURES 5, 6, 7 and 8 show yet vanother arrangement of the inventionwherein the supporting arm S0 is mounted for transverse axial rotationto bring the V-crotch members 54 into and out of operative position. Ifthe V- crotch members 54 cannot be mounted suciently beneath the surfaceof the inclined table 42, for unloading of the workstock onto the table,an unloading -blade 82 (FIGURES 6 and 7) may be secured to thesupporting arm 80. Rotation of the supporting arm will then bring theunloading blade 82 into contact with the under side of the drawnworkstock W to lift it upwardly and free of the V-crotch members 54.Thereafter, the workstock W will be free to roll to one side -of theanti-recoil mechanism and then onto the surface of table 42.

The supporting arm 80 may be rotated by motor and lever means such asshown in FIGURE 7, including a uid motor 84, and a lever 86 pivotallysecured to the piston rod 88 of the motor, and rigidly fastened to oneend of a supporting arm pivot rod 90, whereupon linear movement of thepiston rod 88 is translated into rotary movement of the supporting armrod 99.

VAn alternative to the uid motor and lever arrangement of FIGURE 7resides in the utilization of a rotary movement actuator 35 (see FIGURE7A) directly connected in axial alignment with pivot rod 90, by acoupling member 92. Actuator may be a linear to rotary motion translatorsuch as Iare in common use for instance in opening and closing largeindustrial valves and the like. These devices are |well understood bythose skilled in the art. It will be apparent from an inspection ofFIGURES 7 and 7A that the function of both devices is the same, onlylthe actuator means being different.

Referring now to FIGURE 9, ya modification of the species of theinvention illustrated in FIGURES 3 and 4 is shown. In this embodimentinstead of pivotally swinging 'the stock intercepting crotches 54 on aAframe about a pivotal axis of rotation as shown in FIGURE 3 and FIGURE4, the FIGURE 9 embodiment utilizes a pair of `guideways 94. Bracket 96supports the work intercepting crotches 54 and is permitted to move in avertical plane. Vertical movement `of bracket 96 is controlled by afluid motor 98 serving generally the same function as fluid motor 56 ofFIGURE 2, fluid motor 72 of FIGURES 3 and 4, and fluid motor 84 ofFIGURE 5.

The embodiments of the invention shown in FIGURES l, 2, 3, 4 and 9 eachperform a common function, towit: To intercept and transfer drawn andarrested workstock W onto table e2 by virtue of shifting the crotchmembers 54 below the surface of the table 42. The embodiments of theinvention illustrated in FIGURES 1 through 9 each perform this commonfunction, whether it be by means of shifting the crotches beneath thesurface table7 or lby `deflecting the workstock `from the crotches 54 bymeans of deflecting blade 82 shown in FIGURES 6 and 7.

The embodiments of the invention shown in FIGURES 10 through 13,however, are predicated on a somewhat different principle. In theseembodiments an inclined table 42 is not employed to coact Awith crotches54 in the manner shown in the FIGURES 1 through 9. Additionally, themeans of `aligning the work intercepting crotches beneath the path ofthe workstock is predicated on la principle different from thatheretofore described.

Referring now more specifically to FIGURES 10 through 13, thisembodiment of the invention herein illustrated is based on the conceptof swinging the Workpiece crotch intercepting members 54 in an arcuatehorizontal path to one side of the drawbench 10 in order to permit thecarriage to pass over the idrawbenoh without interference with theworkstock intercepting apparatus. Thereafter, -by synchronizing relayand limit switch means well understood by those skilled in the art, andnot constituting a part of this invention, a mechanism is actuated whichswings the intercepting crotches 54 into position to perform thefunction of receiving and `arresting the forward motion of the stock.

To this end, the crotches 54 are mounted on a pivot arm 10i) secured toand adapted -to pivot on vertical stanchion 112 about axis 1132. Thus,'as viewed in FIG- URE 10, pivot arm 11?@ assumes two positions in thehorizontal plane to wit: position A, shown in phantom, at the side ofand parallel to the longitudinal axis of the drawbench 1o; and positionB transverse yof the drawbench and beneath the path of lthe workstock Wbeing drawn. A fluid motor 164 is pivotally fastened by piston rod 166to the end 108 Vof lever member 111i, which in turn is rigidly securedto the base of stanchion 112. Thus, energization o-f fluid motor 164through lthe niembers just `described will cause arm 161)l to shift fromposition A to position B.

Also rigidly fastened near the base of vertical stanchion 112 is `aplatform 11d to which is mounted yet another fluid motor 116. As bestshown in FIGURE 12, arm 10i? is pivotally secured to the top of verticalStanchion 112, and fluid motor 116 is pivotally fastened .to aconnecting lever 113 rigidly secured to arm 181). It will becomeapparent, therefore, that energization of fluid motor 116 will cause ann11211* to pivot the crotch members S4 into upright position beneath thepath of the workstock being drawn. After the completion of the drawingcycle, uid motor 11o is energized to urge lever 11S (FIGURE 13)upwardly, thereby rotating arm 106* to shift V-'crotches 54 from avertical plane in the `direction away from the viewer of FIGURES 12 and`13 into a horizontal plane. At the same time, work engaging fblade S2,normal to crotches S4, shifts into lthe vertical plane vacated bycrotches 54. Blade S2 makes upwardly lifting contact with the undersideof the workpieces, which are then free to roll along its inclined topedge to one side of the drawbench.

Reference is now made to FIGURES 14 and 15 which show control means foroperating the embodiments of the invention illustrated in FIGURES 1through 9, inclusive.

As chain '22 draws carriage 34 across the drawbench a lug makes contactwith switch throw 'arm 36 to close limit switch IJs-1. Relay R-1 isthereby energized to `close contacts C-1 and aotuate solenoids 132 ofdouble acting air cylinders 56 (FIGURE 2), 72 (FIGURE 3), 84 (FIGURE 7),85 (FIGURE 7A), or 9S (FIG- 6 URE 9). Initial actuation lof any of theabove identified air cylinders retracts the V-crotch member 54 to unloadtubes W in the manner fully described hereinabove.

As carriage 34 :continues to be :drawn across drawbench V10, lug 35opens normally closed limit switch LS-2 by contacting switch lthrow arm3-7 which d e-energizes relay AR-l and opens contacts C-1, whereby airvalve solenoid 132 is -de-energized to reverse the double actingcylinder and return the V-crotches 54 to the raised position. Manualpush buttons PB-I and PB-Z are also provided in the circuitry for thepurpose of manually controlling the actuation of relay R-l.

FIGURES 16 and 17 illustrate schematically the operation of theembodiment of the invention shown in FIG- URES 10" Ithrough 13,inclusive. For instance, as carriage 34 proceeds along drawbench 10, lug35 shifts a two-Way operating air valve lever 134 into 4the openlposition, releasing pressure to solenoid actuated normally open airvalves 136 and 138. Inasmuch as air valve 136 is normally open to Iaircylinder 104, `cylinder 104 is immediately actuated to pivot arm 11)@(see FIGURE 10) into transverse position with respect -to the 4draw pathof the work stock W. A pressure valve 140 is interposed between airvalve 134 and lair valve 138 to delay actuation of air cylinder 116until air cylinder 1114 has pivoted arm 1110* into the aforesaidtransverse position. Thereafter cylinder 116 (see FIGURE 11) rotates arm160 90i degrees from the horizontal to the vertical.

After the tubes have ybeen drawn and have ydropped into V-crotches 54,push button Pi-3` is depressed to yactivate relay R-2 which `closescontacts C-Z, permitting activation of relay R-3. Actuation of relay R-2and contacts C-Z also energize solenoid valve 138 to exhaust springreturn cylinder 116. V-crotches 54 are rotated into a horizontal planethereby unloading Work stock W onto inclined blade 82. Push button PBAis then depressed activating relay R-3 and thereby closing contact C-3to energize solenoid air valve 136 to exhaust spring return cylinder104. Cylinder 104 then shifts pivot arm 161) from the transverse to thelongitudinal position relative .to drawbench 10. Closing of relay R-3and contact C-3 also permits activation of relay R-4 by push button PB-Swhich reverses the direction of the draw chain 22 to return the`carriage 34 to the die stand 32.

In returning to the die stand, carriage lug 35 closes valve 134 andopens normally closed limit switch LS-S which thereby reopens all relaysand contacts so that valves 136 and 138 are returned 'to their normallyopen position ready for the next cycle. Push button PB- is a manualoverride for limit switch LS-3.

It is understood that a plurality :of arms 1410 and associated means maybe spaced `as necessary along the longitudinal axis of the drawbench.The timing 'and control programing means employed is adapted -to shiftthe arms from position A to position B and return in synchronizationwith the movement of the `drawbench carriage so as -to provide clearancefor the carriage both during the drawing portion of the cycle ,and thereturn of the carriage to the die stand. Such programing means are wellunderstood by those skilled in the art, and further elaboration is notconsidered necessary for a full and complete -understanding of theinvention.

Still other yarrangements and modications will be suggested upon areading of the specification taken in conjunction with the drawings andappended claims, and these other arrangements may be resorted to withoutdeparting from the spirit and scope of the invention as defined by theappended claims.

I claim:

1. In combination with a die stand draw carriage and dravvbench,workstock energy dissipating means comprising: an upstanding V-shapedcrotch positioned beneath the workstock drawpath to receive drawnworkstock therein, and means to shift said V-shaped crotch to releasesaid workstock therefrom. y

2. The device set forth in claim l, including: a pair of resilientlyflexible members yieldable to contact by said draw carriage secured toopposite sides of said J-shaped crotch and extending upwardly therefromto straddle opposite sides of said workstock, whereby said resilientmembers guide drawn workstock into said crotches.

3. The device set forth in claim l, including: a high coefficient offriction substance applied to the inner surfaces of said V-shapedcrotch.

4. In combination with a die stand and drawbench, works-took energydissipating means comprising: an upstanding V-shaped crotch positionedbeneath the workstock drawpath to receive drawn workstock therein;workstock receiving means; and means to shift said V-shaped crotch totransfer said drawn worlistock from said V-sha-ped crotch to saidworkstock receiving means.

5. In combination with a die stand and drawbench, stock anti-recoilmeans comprising: an upstanding V-shaped crotch positioned beneath theworkstock drawpath of the drawbench to intercept therein drawnworkstock; workstock receiving means beneathrsaid workstock drawpath andadjacent said V-shaped crotch to coact therewith; said V-shaped crotchbeing movably secured to said drawbench for shifting workstoek from saidV-shaped crotch to said stock receiving means.

6. In combination with a die stand and drawbench, workstock energydissipating means comprising: an upstanding V-shaped crotch positioned4beneath the workstock drawpath to receive drawn workstock therein whenreleased from the die stand; workstock receiving means adjacent saidV-shaped crotch and inclined transversely toward one side of saiddrawbench; and means to shift said V-shaped crotches from above tobeneath said workstock receiving means whereby said -Workstock istransferred from said crotch to said workstock receiving means.

7. In combination with a drawbench, stock anti-recoil means comprising:sets of transversely arranged upstanding V-shaped crotches positionedbeneath the workstock drawpath, said sets being spaced apart along thelongitudinal axis of said drawpath; workstock receiving means adjacenteach transversely arranged set of V-shaped crotches, said V-shapedcrotches being mounted on said frame to `be shiftable beneath saidworkstock receiving means; whereby drawn workstock intercepted by saidcrotches is transferred therefrom by shifting said crotches beneath theworkstock receiving means.

8. rI'he device set forth in claim 7 including: pairs of resilientmenrbers secured to opposite sides of said V-shaped crotches andextending upwardly therefrom, whereby said resilient members guide drawnworkstock into said crotches.

9. The device set forth in claim 7 wherein said V-shaped crotches aremounted to shift downwardly beneat-h the drawpath of said drawbench andtransversely thereto.

y1G. The device set forth in claim 7, wherein said V-shaped crotches aremounted to shift downwardly beneath the drawpath of said drawbench andlongitudinally therewith.

11. The. device set forth in claim 7, wherein said V-shaped crotches aremounted to shift vertically beneath the drawpath of said drawbench.

12. The `device set forth in claim 7, wherein at least one of said setsof crotches is` mounted to pivot downwardly beneath the drawpath of saiddrawbench and transversely thereto, and at least a second of said setsof crotches is mounted to pivot downward-ly beneath the drawpath of saiddrawbench and substantially longitudinally therewith.

13. In combination with a die stand and drawbench, workstock energydissipating means comprising: a workstock supporting platform beneaththe drawpath of said drawbench extending longitudinally therewith andbeing inclined transversely thereto; a plurality of openings in saidplatform spaced apart along the longitudinal axis of said drawpath;supporting arms positioned in said open'- ings and shiftably secured tosaid drawbench; at least one upstanding V-shaped crotch secured to eachof said supporting arms; and means to shift said supporting arms tolower said V-shaped crotches beneath the said workstock supportingplatform; whereby drawn workstock intercepted in said V-shaped crotchesis transferred to said platform when said V-shaped crotches are shiftedbeneath said platform.

14. In combination with a die stand and drawbench,

workstock energy dissipating means comprising: an upstanding V-shapedcrotch positioned beneath the workstocl; drawpath, said V-shaped crotchbeing mounted on Said drawbench to rotate about a horizontal axistransverse to said drawpath; and blade means fastened normal to saidV-shaped crotch to rotate upwardly therewith and lift workstock clear ofsaid V-shaped crotch as said V-shaped crotch is rotated downwardly.

15. The device set forth in claim la, 'wherein the work contacting edgeof said blade is transverse to said drawbench and inclined to one sidethereof, whereby workstock lifted from said V-shaped crotch by saidblade will roll along said work contacting edge of said blade to oneside of said drawbench.

16. In combination with a die stand and drawbench, workstock energydissipating Imeans comprising: a workstock supporting platform beneath.the drawpath of said drawhench extending longitudinally therewith andbeing kinclined transversely thereto; a plurality of openings in saidplatform spaced apart along the longitudinal axis of saidV drawpath;supporting arms positioned inv said openings and shiftably secured tosaid drawbench; a plurality of upstanding V-shaped crotches secured toeach of said supporting arms; and means to shift said V-shaped crotchesfrom above to beneath said workstock supporting platform to liftworkstock from said V-shaped crotches onto said platform.

17. In combination with a die stand and drawbench, workstock energydissipating means comprising: a workstock supporting platform beneaththe drawpat-h of said drawbench extending longitudinally therewith andbeing inclined transversely thereto; a plurality of openings in saidplatform spaced apart along the longitudinal axis of said drawpath;supporting arms positioned in said openings transverse to thelongitudinal axis of said drawpath; a plurality of upstanding V-shapedcrotches secured to each of said supporting arms; means to pivotallyconnect said supporting arms to said drawbench; and means to arouatelypivot -said supporting arms downwardly be- 'low said platform; wherebyworkstock pieces engaged in said V-shaped crotches are lifted from saidVshaped crotches responsive to engagement with said inclined piatform.

18. In combination with a die stand, drawbench, carriage, and workstockenergy dissipating means comprising: a V-crotch supporting arm mountedadjacent and parallel to one side of said drawbench in a horizontalplane beneath the worlcstock drawpath; means to horizontally shift saidarm between said parallel position and a position beneath said drawpathtransversely thereto; at least one V-shaped crotch secured to said arm;a workstocl; intercepting blade secured to said arm and normal to saidV-shaped crotch; and means to rotate said arm about its horizontal axisto shift said V-shaped crotch and said intercepting blade sequentiallyinto and out of vertical and horizontal planes respectively when saidarm is in the said transverse position.

19. 'I'he device set forth in claim. 18, including iirst fluid motormeans to shift said sup-porting arm horizontally from the said parallelposition to the said transverse position; second fluid motor means torotate said supporting arm about its said horizontal axis; valve meansoperable by movement of said carriage along said draw- 9 l@ bench toenergize said uid motors, and second valve Referenees Cited in the ie ofthis patent means interposed between said second uid motor means UNITEDSTATES PATENTS and said first mentioned valve means adapted to delay ractuation of said second fluid motor means until said 2,630,910 TurnerMf- 10, 1933 rst ud motor means has shifted said supporting arm 52,373,849 LOIlbafd FSO. 17, 1959 into the said transverse position.

1. IN COMBINATION WITH A DIE STAND DRAW CARRIAGE AND DRAWBENCH,WORKSTOCK ENERGY DISSIPATING MEANS COMPRISING: AN UPSTANDING V-SHAPEDCROTCH POSITIONED BENEATH THE WORKSTOCK DRAWPATH TO RECEIVE DRAWNWORKSTOCK THEREIN, AND MEANS TO SHIFT SAID V-SHAPED CROTCH TO RELEASESAID WORKSTOCK THEREFROM.